4 years ago

50 POINTS!!!

Mathematics

2 answers:

barxatty [35]4 years ago

7 0

Answer:

18 pi ^2

I had a similar explanation to the one below. I believe that is the most simple way to come up with a answer.

Fittoniya [83]4 years ago

4 0

Answer:

18 π cm^2.

Step-by-step explanation:

The area of the whole circle = π r^2 = 81π cm^2.

Since there are 360 degrees in a circle the area of the shaded region =

80/360 * area of the circle.

This = 80/360 * 81 π

= 2/9 * 81 π

= 18 π

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